Government debt provides assets for the private sector in the form of bonds. When the government pays down debt, it reduces assets available for pension funds and insurance companies to invest in. A budget deficit means the government is spending more than it collects in taxes, injecting funds into the private sector. This type of spending can help the economy grow to its full potential and allow the private sector to reduce its own liabilities. In contrast, budget surpluses and efforts by the government to save can lead to higher private sector debt and economic contraction. Controlled government deficits that are managed sustainably can benefit both the private sector and overall economy.